Horizontal waste-gas steam boiler



JAHN El AL noaxzomvm 1WASTE (ms swam BOILER Filed April 1926 PatentedAug. 14, 1928.

UNITED STATES PATENT or icE.

GOTTLIEB J'AHN, OF KIEL, AND ARTHUR RUNKWI'IZ, OF ELENSCH ENHAGEN, NEARKIEL, GERMANY, ASSIGNORS TO FRIED. KRUPP S ELLSGHAIT, OF KIEL-GAARDEN,GERMANY.

GERMANIAWERFT AK'IIENGE- HORIZONTAL WASTE-GAS STEAM BOILER.

Application filed April 3, 1926, Serial No.

This invention relates to the heating of auxiliary steam boilers of thehorizontal type and has for its object to heat such boilers with theexhaust gases of internal combustion engines utilizing to a high degreethe heat contained in the gases.

According to the invention, this object is attained by arrangingan'exhaust gas distributing chamber so as to partly surround 1 theintake chamber of the auxiliary steam boiler and by causing theintroduction of the exhaust gases from the distributing chamber :intothe intake chamber to take place through nozzles which extend throughthe shell of the intake chamber at different angles in such a mannerthat the nozzles break up the exhaust gas current into a pluralityofdivisional currents and impart to the latter 'a circular movement,thereby effecting a uniform distribution of the exhaust gases over theentire head face of the boiler.

An embodiment of the subject-matter of the invention is illustrated byway of example in the accompanying drawing in which:

Fig. -1 is a vertical longitudinal section through the boiler and; IFig. 2 is a section'on the line 2-2 of ig. 1. N

A is the horizontal cylindrical auxiliary steam boiler through whichextend the heating tubes B which are rolled into the head walls of theboiler. Arranged in front of the boiler is an intake chamber C and inits rear a smoke chamlifer D from which the heating gases ass through abranch 01 into the chimney not shown). Arranged outside the intakechamber C is a distributing chamber E from which nozzles F open into theintake chamber. These-nozzles extend through the shell of the intakechamber at angles different from one another, the arrangement beingsuch. that the angles of the y axes of the several nozzles with respectto the horizontal continually increase from the inlet branch 0 for theexhaust gases.

The inlet branch e which is'in connection with the exhaust conduit ofthe internal for use on 7 ships combustion engine, admits the exhaustgases 99,534, and in Germany August 1.8, 1925.

into the distributing chamber E where they distribute throughout theentire space of the chamber. From the distributing chamber the gasesflow in divisional currents through the nozzles F into the intakechamber C into which the heating tubes open. The arrangement of thenozzles F prevents the divisional currents from spreading irregularly inthe intake chamber C. On the one hand, these nozzles F impartto theseveral divisional exhaust gas currents at circular movement in theinterior of the intake chamber C and, on the other hand, the divisionalexhaust gas currents are guided in almost concentrical circles aroundthe point designated with w in Fig. 2, the divisional current admittedthrough the nozzle 1 describing the smallest circle around the point :20and each of the next following nozzles 2, 3 etc. causing its divisionalcurrent to circulate around the point a; with a correspondingly largerradius. It is attained by this concentric guiding of the divisionalexthe smoke chamber D and from the latter through the branch d into thechimney.

The described manner of the distribution permits of an excellentutilization of the heat of the exhaust gases to be attained.

The plant is more particularly'adapted propelled by internal combustionengines.

We. claim: A horizontal waste gas steam boiler, comprising'heating tubesextending from one head wall of the boiler to the other, an in takechamber arranged on one of the head faces of the'boiler so as tocommunicate with the heating tubes, a waste gas distributing chamberarranged to partly surround the intake chamber, means for introducing acur-. rent of waste gas into the distributing chamber, and nozzles inthe shell of the intake chamber for establishing communication ber-urrent into a plurality of divisional currents, the said nozzles beingarranged to extend through the shell of the intake chamber at anglesdifferent from one another in such a manner that the nozzles impart tothe divisional currents substantially concentric vu'eular movements eachof different radius III the intake chamber and thereby effect a uniformdistribution of the waste gas over the entire head face of the boiler.10

The foregoing specification signed at Hamburg, Germany, this 19th day ofFeb ruary, 1926.

GOTTLIEB J AHN. ARTHUR RUNKWITZ.

